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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 21, 2013. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1934 | S15 | E67 | 03 | 0080 | Beta | Dec 27, 2013 | Jan 3, 2014 | Jan 16, 2014 |
| № 1933 | S13 | W51 | 04 | 0040 | Beta | Dec 18, 2013 | Dec 25, 2013 | Jan 7, 2014 |
| № 1932 | N04 | E06 | 01 | 0010 | Alpha | Dec 22, 2013 | Dec 29, 2013 | Jan 12, 2014 |
| № 1931 | S15 | E50 | 01 | 0190 | Alpha | Dec 26, 2013 | Jan 1, 2014 | Jan 15, 2014 |
| № 1930 | S11 | E10 | 12 | 0090 | Beta | Dec 23, 2013 | Dec 29, 2013 | Jan 12, 2014 |
| № 1929 | S12 | E27 | 05 | 0010 | Beta | Dec 24, 2013 | Dec 31, 2013 | Jan 13, 2014 |
| № 1928 | S17 | W30 | 18 | 0400 | Beta-Gamma | Dec 20, 2013 | Dec 26, 2013 | Jan 9, 2014 |
| № 1921 | N07 | W69 | 02 | 0200 | Alpha | Dec 17, 2013 | Dec 23, 2013 | Jan 6, 2014 |
| № 1920 | N13 | W73 | 01 | 0050 | Alpha | Dec 16, 2013 | Dec 23, 2013 | Jan 6, 2014 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to December 2013. The gray background is the average SSN index.
